From 131b311fe32d328b68c21443a28b08390815e9ac Mon Sep 17 00:00:00 2001
From: Julien Bernard <julien.bernard@univ-fcomte.fr>
Date: Fri, 7 Aug 2020 15:24:53 +0200
Subject: [PATCH 1/2] add install for cmake

---
 CMakeLists.txt        | 14 ++++++++++++++
 src/CMakeLists.txt    | 41 +++++++++++++++++++++++++++++++++++++++--
 src/box2dConfig.cmake |  3 +++
 3 files changed, 56 insertions(+), 2 deletions(-)
 create mode 100644 src/box2dConfig.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 92b2c00f9..987d0fb1a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,6 +5,15 @@ project(box2d VERSION 2.4.0)
 
 # set(CMAKE_CONFIGURATION_TYPES "Debug;RelWithDebInfo" CACHE STRING "" FORCE)
 
+include(GNUInstallDirs)
+
+if(NOT CMAKE_CONFIGURATION_TYPES)
+  if(NOT CMAKE_BUILD_TYPE)
+    message(STATUS "Setting build type to 'RelWithDebInfo' as none was specified.")
+    set(CMAKE_BUILD_TYPE "RelWithDebInfo")
+  endif()
+endif()
+
 set_property(GLOBAL PROPERTY USE_FOLDERS ON)
 
 add_subdirectory(src)
@@ -39,3 +48,8 @@ if (BOX2D_BUILD_TESTBED)
 		set_property(TARGET testbed PROPERTY VS_DEBUGGER_WORKING_DIRECTORY "${CMAKE_SOURCE_DIR}/testbed")
 	endif()
 endif()
+
+install(
+  DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/include/box2d"
+  DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}
+)
diff --git a/src/box2dConfig.cmake b/src/box2dConfig.cmake
new file mode 100644
index 000000000..e5f8bc00b
--- /dev/null
+++ b/src/box2dConfig.cmake
@@ -0,0 +1,3 @@
+get_filename_component(BOX2D_CMAKE_DIR "${CMAKE_CURRENT_LIST_FILE}" DIRECTORY)
+include("${BOX2D_CMAKE_DIR}/box2dTargets.cmake")
+include("${BOX2D_CMAKE_DIR}/box2dConfigVersion.cmake")

From 82317c288e9052eb3272afd4f4db2a0d5654c69d Mon Sep 17 00:00:00 2001
From: Julien Bernard <julien.bernard@univ-fcomte.fr>
Date: Sat, 8 Aug 2020 22:32:01 +0200
Subject: [PATCH 2/2] install documentation too

---
 docs/CMakeLists.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/docs/CMakeLists.txt b/docs/CMakeLists.txt
index 623bc5e35..edffb4edd 100644
--- a/docs/CMakeLists.txt
+++ b/docs/CMakeLists.txt
@@ -26,3 +26,7 @@ add_custom_target(docs ALL "${DOXYGEN_EXECUTABLE}"
                   WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/docs"
                   COMMENT "Generating HTML documentation" VERBATIM)
 
+install(
+  DIRECTORY "${CMAKE_BINARY_DIR}/docs/html"
+  DESTINATION "${CMAKE_INSTALL_DOCDIR}"
+)
--- box2d-2.4.0/src/CMakeLists.txt~	2020-07-27 01:03:45.000000000 -0500
+++ box2d-2.4.0/src/CMakeLists.txt	2020-08-10 10:11:13.717443059 -0500
@@ -95,13 +95,40 @@
 	../include/box2d/b2_world_callbacks.h
 	../include/box2d/box2d.h)
 
-add_library(box2d STATIC ${BOX2D_SOURCE_FILES} ${BOX2D_HEADER_FILES})
-target_include_directories(box2d PUBLIC ${CMAKE_CURRENT_SOURCE_DIR}/../include)
+add_library(box2d ${BOX2D_SOURCE_FILES} ${BOX2D_HEADER_FILES})
+target_include_directories(box2d PUBLIC $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../include> $<BUILD_INTERFACE:${CMAKE_CURRENT_BINARY_DIR}>)
 target_include_directories(box2d PRIVATE ${CMAKE_CURRENT_SOURCE_DIR})
 set_target_properties(box2d PROPERTIES
 	CXX_STANDARD 11
     CXX_STANDARD_REQUIRED YES
     CXX_EXTENSIONS NO
+    VERSION ${PROJECT_VERSION}
+    SOVERSION ${PROJECT_VERSION_MAJOR}
+)
+
+generate_export_header(box2d
+  BASE_NAME b2
+  EXPORT_MACRO_NAME B2_API
+  EXPORT_FILE_NAME b2_api.h
+  STATIC_DEFINE B2_STATIC
+)
+
+if (NOT BUILD_SHARED_LIBS)
+  target_compile_definitions(box2d
+    PUBLIC
+      B2_STATIC
+  )
+endif()
+
+target_compile_definitions(box2d
+  PRIVATE
+    box2d_EXPORTS
+)
+
+install(
+  FILES
+    "${CMAKE_CURRENT_BINARY_DIR}/b2_api.h"
+  DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}/box2d"
 )
 
 source_group(TREE "${CMAKE_CURRENT_SOURCE_DIR}" PREFIX "src" FILES ${BOX2D_SOURCE_FILES})
--- box2d-2.4.0/src/CMakeLists.txt~	2020-08-10 10:22:41.000000000 -0500
+++ box2d-2.4.0/src/CMakeLists.txt	2020-08-10 10:28:32.215330614 -0500
@@ -135,3 +135,35 @@
 
 source_group(TREE "${CMAKE_CURRENT_SOURCE_DIR}" PREFIX "src" FILES ${BOX2D_SOURCE_FILES})
 source_group(TREE "${CMAKE_CURRENT_SOURCE_DIR}/../include" PREFIX "include" FILES ${BOX2D_HEADER_FILES})
+
+install(
+  TARGETS box2d
+  EXPORT box2dTargets
+  LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR}
+  RUNTIME DESTINATION ${CMAKE_INSTALL_BINDIR}
+)
+
+install(
+  EXPORT box2dTargets
+  NAMESPACE box2d::
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/box2d"
+)
+
+install(
+  FILES box2dConfig.cmake
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/box2d"
+)
+
+include(CMakePackageConfigHelpers)
+
+write_basic_package_version_file(
+  "${CMAKE_CURRENT_BINARY_DIR}/box2dConfigVersion.cmake"
+  VERSION ${PROJECT_VERSION}
+  COMPATIBILITY SameMajorVersion
+)
+
+install(
+  FILES "${CMAKE_CURRENT_BINARY_DIR}/box2dConfigVersion.cmake"
+  DESTINATION "${CMAKE_INSTALL_LIBDIR}/cmake/box2d"
+)
\ No newline at end of file